Error when syncing from Trakt app on Windows

Hello, I have windows 10 with MediaPortal and trakt extension to sync watched history.

Till this morning was all ok. As of the early afternoon I noted that suddenly it didn’t sync anymore.

Checking the app I tried to revoke access and then re-authorize. Uninstalled and then installed the extension on windows, which installed the last version available (6.07.446). ThenI open the log and there is the following message:

2026-07-04 16:52:51.679 [INFO] [01]: Application access has now been revoked from using trakt.tv account
2026-07-04 16:53:12.813 [INFO] [04]: Getting device code from trakt.tv
2026-07-04 16:53:13.113 [INFO] [04]: Successfully got device code from trakt.tv, presenting code ‘4D19746D’ to user for activation at ’ Sign in to Trakt - Trakt '. Code expires in ‘600’ secs
2026-07-04 16:53:13.113 [INFO] [04]: Polling trakt.tv for authorization token every ‘5’ secs until user enters code
2026-07-04 16:53:39.359 [INFO] [04]: Authorization to use trakt.tv account has been successfull
2026-07-04 16:53:42.421 [INFO] [01]: Saving settings
2026-07-04 16:53:48.866 [INFO] [Sync][07]: Logging into trakt.tv
2026-07-04 16:53:49.066 [INFO] [Sync][07]: User Fabio75 successfully signed in and retrieved online settings from trakt.tv
2026-07-04 16:53:49.066 [INFO] [Sync][07]: Library and Playback Sync started for all enabled plugins
2026-07-04 16:53:49.076 [INFO] [Sync][07]: Started refresh of tv show user data from trakt.tv
2026-07-04 16:53:49.086 [INFO] [Sync][07]: Getting current user unwatched episodes from trakt.tv
2026-07-04 16:53:49.286 [INFO] [Sync][07]: Getting current user watched episodes from trakt.tv
2026-07-04 16:53:49.286 [INFO] [Sync][07]: Getting current user last activity times from trakt.tv
2026-07-04 16:53:49.486 [INFO] [Sync][07]: TV episode watched history cache is out of date, requesting updated data. Local Date = ‘2026-07-01T14:30:49.000Z’, Online Date = ‘2026-07-04T14:46:20.000Z’
2026-07-04 16:53:51.277 [ERR ] [Sync][07]: Error getting user data from trakt.tv. Error = ‘Object reference not set to an object instance.’

What is this error now? What do I have to do?